Gas burner



July 31, 1934. A. ROTH 1,968,620 v GAS BURNER Filed Jan. 4, 1932 INVENTOR: ADOLF N. ROTH.

ATTORNEY.

Patented July 31, I934 M: v v 7 1,968,620

\ {UNiT'ED STATES PATENT OFFICE Application .Ianuary 4, 1932, Serial No. 584,620 5 Claims. (01. 158-116)" This invention relates to improvementsin gas burners and more particularly to a gas burner which is adapted to the burning of natural gas.

Natural gas is a by-product in the petroleum 1. industry and is ifinding increasing use in communities wherethe supplyis. available.- However, considerable .difficulty is being experienced in the burning of the gas in the conventional gas burners. i I U i 1 The gas appears to lack physical aflinity for the atmosphere and forms an imperfect. admixture with it. This results in uneven combustion anda, tendency. for the flame toburn yellow. Another. result is difficulty in ignition of the 5 flame and danger of extinguishment of the flame uponslight, changes in gas pressure.

Natural gas requires a definite time interval for it to mix with the air and become properly combustible. In prior gas burners, the gas issues 9 from the burner with such velocity that it is often projected a considerable distance from the burner before it becomes sufiiciently oxidized to ignite.

As may readily be seen, imperfect admixture of gas and air lowers its heating eificiency.

The present invention overcomes these difficulties. Proper air admixture is insured by diffusing the gas over a wide area as it issues from the burner.

The movement of the gas is also definitely retarded by a change in its direction as it passes from the burner. This allows the gas sufficient time to mix with the air before passing into the flame. The change of direction also causes a 35 turbulence in the current of gas, further insuring its combustibility.

In this specification and the accompanying drawing the invention is disclosed in its preferred form, but it is to be understood that it is not 40 limited to this form because it may be embodied in other forms. It is also to be understood that in and by the claims following the description, it is desired to cover the invention in whatsoever form it may be embodied.

In the one sheet of drawing:

Fig. 1 is a perspective view of a burner constructed in accordance with this invention.

Fig. 2 is a vertical section of the same.

Fig. 3 is a side elevation view of the same showing the shape of the flame in dotted lines.

Fig. 4 is a side elevation of a modified form of the invention applied to a laboratory bunsen burner.

Fig. 5 is a fragmentary detail view in vertical ,5? section of the same.

In v detailithe construction illustrated in the drawingcomprises the nipple 1 which is externally threaded at 2 to be screwed into a suitable gas. pipe manifold. a I

A pluralityrof burners may form a series on one $9 or morey straight manifolds or may be arranged in a circle on an annular manifold. The admissionof -the gas to the manifoldis regulated by any suitable valve. :The lower end of the nipple is recessed at 3. The narrow passage 4 is centrally bored in the nipple and communicates with the aspirator 5. The shell of theaspirator may be of rectangular or hexagonal form, as shown at 6. This facilitates-the screwing of theburner into the mani- Q f01d.-- -v i Openings are provided at 7-7 to admit air into the aspirator. If desired any conventional form of adjustable louver may be provided at the openings 7-7 of the aspirator. H

The tubular stem 8 is integral with the aspirator shell 6 and terminates in the head 9. The length of the stem 8 varies with the conditions of operation and the quality of fuel. The proportions shown in the drawing are satisfactory for general purposes.

The upwardly extending side plates 10-10 are integral with the head 9 and are bent toward each other at 11 to form a substantially cylindrical overhang which is open at l212. v

A small hole is drilled at 13 between the ends of the semi-cylindrical plates 10--10. A slight clearance is allowed at 14 between the ends of the plates.

The invention operates as follows: Assuming the burner to have been previously screwed into a suitable manifold, the gas is turned on by the usual valve in the service line.

The gas passes from the manifold through the recess 3 and the passage 4 into the aspirator 5. .25 The draft of the up-rushing gas draws atmospheric air through the openings 7-7 into the aspirator. As the gas rises, it mixes with the air in the stem 8.

Upon reaching the head 9, the gas is discharged 19 at 12-12 laterally from the burner. This changes its course and retards its velocity so that it mixes with the air completely before being consumed. There are no adverse currents to dissipate unconsumed gas into the outer air. As .;'i can readily be seen by examination of Fig. 3, the v gas is diffused into a wide space, insuring perfeet admixture with the air.

A small amount of gas also issues from the hole'13, burns above the burner, and serves as a 1 pilot light should either of the flames at 12-12 be extinguished. The small flame at 13 is especially resistant to side drafts.

The construction of the modified form shown in Figs. 4 and 5 comprises the base 20 upon which is mounted the throat 21. The nipple 22 is fixed in the throat 21 and is adapted to be telescoped into a suitable rubber gas tube.

Surmounting the throat 21 is the conventional aspirator 23 which is controlled bythe adjustable louver 24. The tubular stem 25 extends upward from the aspirator and terminates in the rectangular head 26. The tapered openings" 27 are milled in each of the sides of the head 26.

The head is closed by the overhanging cap 28. The cone 29 is integral with the cap 28 and depends therefrom. The hole 30 is centrally bored through the cap 28 and the cone 29.

This modified form operates as follows:

The gas is admitted into the nipple 22 from whence it passes into the aspirator 23. The draft thus created draws air into the aspirator in the conventional manner.

The gas then rises in the stem 25 and is discharged through the head 26 at 2'7'2'7, 30. The combustion thus formed is a substantially homogeneous flame suitable for laboratory use. The cone 29 serves to direct the flame upward in an oblique direction.

The gas is distributed into a wide space and its movement is retarded as was described at length in the description of the preferred embodiment. The flame at 30 also serves as a pilot light should one of the side flames become extinguished.

Having thus described this invention what I claim and desire to secure by Letters Patent is:

1. A gas burner having a tubular stem with an inlet at its lower end and an aspirator above said inlet; and a cylindrical head on the upper end of said stem and arranged perpendicularly thereto, said head being open at each end and having a pilot opening in its top.

2. A gas burner having a tubular stem with an inlet at its lower end and an aspirator above said inlet; and a hollow cylindrical head on the upper'end of said stem arranged perpendicularly thereto. and of greater internal diameter than the interior of said stem, said head being open "at both ends and having a pilot opening in its top.

3. A gas burner having a tubular stem with an inlet at its lower end and an aspirator above said inlet; and a hollow cylindrical head on said stem and arranged perpendicularly thereto, said head being open at both ends and having its top severed longitudinally with a pilot opening included in said severed portion.

4. A gas burner having a tubular stem with an inlet at its lower end and an 'aspirato'r above said inlet; and a cylindrical head on the upper end of said stem and arranged perpendicularly thereto, said head being open at each endand having its top severed longitudinally.

5. Agas burner having a tubular stem with an inlet at its lower end and an aspirator above said inlet; and a hollow cylindrical'head on the upper end of said stem arranged perpendicularly thereto and of greater internal diameter than the interior of said stem, said head being open at both ends and having its top severed longitudinally.

ADOLF N. ROTH. 

